Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1d7ef730f30da821a98905ad319b9a78281d562be2c1ed433a0e227f0154e16b' 
  AND token = '+ggMg1vu7DcAKlDfewzJCWTW0incqA+h1VUnbcL5ZUo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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