Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2f14c436c24d6ae98dedbeb707f4f7d5df027494c1143f1f4c360de4c6b812da' 
  AND token = 'xdFsO0RDOrsXbjx8T6z52O/Cz1HslH0ApAQGLIbl6pA=' 
  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"
    }
  }
}