Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c513e4795079e58b28113459b152e1896167453c0b90327df2f9c04d4fea830e' 
  AND token = 'AfJ+D7Pn1WkHST8Y47oP9DmEORMJq1mbSrOW4GSby6Q=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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