Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '6e50024a1913e990b93b178a17960738bb0715d5c83d54f5f96d6182d1f19945' 
  AND token = 'ml7NGWD+tAKQ1mhDLYnX/cuTptdW2ac86Ha/IXJeWHM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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