Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '90fbe4c057e4793786dd45ffbdb5e99adcf586998b3984fedc44cca75a178593' 
  AND token = 'QDob7c43QaUx+qCBGLuyx4Y0thfOrvE4O2tNT5Vh7mw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00054

JSON explain

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