Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8c40cf717ade9fd3f473492027069dc91ab1a6696e55c1b13a0c959cdbdadff3' 
  AND token = 'cWCNGdnFhl29p4tzfvPSHYGh/nupD69fbM7lt0Fia5Q=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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