Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '67db174adbc35e20431e3d8a4348596850d8e81f4d57351af071ba5a353a0093' 
  AND token = 'yL1QaGL+jGPiI6i9HO0AgZ7DccKv1vk2otzV0JU6/+0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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