Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '65ea6923ec55696de8575dd7e24be5e6f32a5c65a06620ae7731153943cbe585' 
  AND token = '79PKqlQd3io/bhjyeKplgGGvEsw/hzxULg22daMKYRw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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