Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '375619b5902358f281307b6cbbe1d01b4b228f13b0ce16034c6660b571464fa7' 
  AND token = 'MXbnryuLk2CDUCfIQ1Q/oUB4lAjln7M0EOJOFCgSCWk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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