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SELECT 
  1 
FROM 
  tmall_lock_keys 
WHERE 
  key_id = '30a440ef4681b1a449e71a8ea732c4e12f7bdb6dba3d45b97c22546b98f5c9bf' 
  AND token = 'ncti39TkZTgE+zf0/SqFV3+4O6gkvRhpZ91NS/MVohg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00786

JSON explain

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