Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c97b178384d118e93153e9d89a4aded833103b08368ade82aecc480c74ac9043' 
  AND token = 'mXSqPT5HvIHV3nXTPjsZjH9nxRFpmoDEG/wuXsln89k=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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