Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'fc10d9665438a89b43c83f0e385a15ccc2cd87d447eed3568ec07ffe58bb9fdb' 
  AND token = 'P7HYsTTPJZw47KYwVPPmZ+lXbCOkyw9SgVaN603hyI8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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