Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7525fb2218a95dad87d4e249fe22763e4e132e22333d9cc513595774b0499c8e' 
  AND token = 'HGfhD0bQpEtGptGNzZzT1Gu5ohnJGdRctZ6SJCL8Uts=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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