Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0bab100a841b260aa7d47c5fd5932b3cce539129871d31d007850cafee878b40' 
  AND token = 't3OUjazxDMYOgHGnr6+dcs7jDZ4FS6Ai0GCLQb6ryV8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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