Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '59ad454d9f9e28a9c669c8b93ebc935413e027af09959f7007f9d3772591745e' 
  AND token = 'FTo3Ub+2xQdpiTMUA9BuejHwxw5oN+yboWfP2YeFCps=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00062

JSON explain

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