Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '61b8f4e5f3ff4fc1c0a70f8a533fe10023cf280656d601b7305a6aff421626e4' 
  AND token = 'g7US3rOk3iGOZv6cx5RochhISgpOAduBx8rc4qgTJTc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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