Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '95ce41925cf73cdf6c7b6788f04752d9a2fdb7196bf2c09724d17710eba9b5ef' 
  AND token = 'BacmZGefmrbkBSFOBeofi/1SGdQrxMt/ZsqxkqjmpCs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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