SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = 'd26c3416282442aa6bb989163bd937784a4f4794f96fa07164ee7ed4e8977ef4' 
  AND token = 'bZkYWNJHWfDSKDPm3q0LKBW+IlTOk1QQXHX05aHE3/8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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