Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b0b37893496e3bcd4768f27503d09b461a381b1d64f20b527ba6e05f06e007f6' 
  AND token = 'Itm6wGjRqD2z2v23+FmcKDW37eoDwoZSkcY311OxiTQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

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