Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3de87467b084017a229d262cfe777613b0288635850b1ccb6db0f4b7d1a92f35' 
  AND token = 'hCFGdfDejpNSl05PhYlpS4lH5L2QlrDBy/k+kyD0Hic=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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