Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3373ec3501eeeb593b1cfa3b1106bf9201089c7efeabf90f743b332c51790b64' 
  AND token = 'LNr1a7elwunbELx3xN8iAVs/4lh7G2UynN8IwGu+IW8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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