Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd7ae287dc67d9f95bde9054acf1d69b7764b31cacd8d13bb20fc913bf8fcea15' 
  AND token = 'VtYd4B1J7YpzbHuZR2BlDP69hrKxY9AwEH0YJGSt838=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}