Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '013cd0e61221ef5852fac8a63cd4ff84addc5008fecbc8d5338499bfae13bcf9' 
  AND token = 'wTlhGu9EVyEElyq9DzokTCYPGz4kug9Wj2ITpDH1IfM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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