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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'cebfa2b6840be27030830d095b53925619eda018a7bf965d0fe09a147f1c6891' 
  AND token = 'Bs8CGRWbr77gzNbwj8co7JgXws8Uj7YYhua+G7K73HU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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