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SELECT 
  1 
FROM 
  tmall_lock_keys 
WHERE 
  key_id = 'b52e774cf3f0f2c55f1620cca3a0b3049962babc99319f39e8ac16d9605c8131' 
  AND token = 'EJJDT2ICYHYmm7cOI0t7adnZVI581EXKD0Pa/LpEmm8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.01439

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}