Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '00e3099a3361bda4415e7b8fa7a878d099f91d47f2e6c6c5ccdbfe4315cfe134' 
  AND token = '7MnSyKr9zT9b8+vlXqNEzqkyA+kS3fSUC0I16mv5JB8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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