Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '89b08195cd87e1c318157f3584eb0d5d9730f90f4bcb4ca348c7000e7ae1d45b' 
  AND token = 'lL2ryPImrnwTpC6F8ZyrjZARC0ARxiPvbFOuRyFXRZc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}