SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '007a0d87325380e4ae454b217d84bfdd408cc0bc595d1a870a4219f79a285e3f' 
  AND token = 'uTMeM7kCfJFviNjzh8v6YYK9tgC0Q/9g1Gx8piL6fzM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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