Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ca956f0c111993f8282c748cb94b4494985f56917378a00fc339ab0dfd56a791' 
  AND token = 'fXI3dFz2/rWUObnNVpvDOEvBiKxfy/SF7Fe31hc6H+Q=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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