Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0f1d7b24ce42d619bdc5ebe96498b6e0fac72392e461fe68a2e0b66b472df0eb' 
  AND token = 'dXSvBJtBT7wP140VoNCg0YZNwV1D5guRmc35A/kvNBk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00014

JSON explain

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