Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'aa8bb94ca169b35f83308a5ab5933017043c3ee0595f5d6007374d48b12b1aff' 
  AND token = 'H9PLinm/zJAscE5Hece7UUFFbbcrXigRY4F9+0dSsUo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00434

JSON explain

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