Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '669ca3c0539aa3529d0465bd7792d83fc57de44034bfd19bff1c909b0e4e3f90' 
  AND token = 'H2jFfZhEdYav0/2CcRg/w6iSpfpHETirVfQGRXhOGvA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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