Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'fb4b3eb27d3dd336ceabb8c8f71253f1ad997cd3ef6dde24a9cc67cb350f029a' 
  AND token = 'qAVXx3X6YxjSsHZjjz7AFIe35Vu8AkMG2Jv3+Z0fbqs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}