Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ba96524fa0d306f7778909815b7fa9f741c7b286fafcea6e6286cc13006ba819' 
  AND token = 'M/Y5isYh08Tv+7PUeMCSSdPZqvo45/Z7zezf3ZhSOB8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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