Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1faed56f44ec7e97352b98e2607016478ea6a1e729cb83fa74481f265f6e2b13' 
  AND token = '+mWBdAB9fLLYHAg+0dsBOhU6k5fs7cJoFV4fhi7YDfA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00053

JSON explain

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