Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '580d1077b3046381547afa9f041efc559b4b4d9a50e9370ac27b161369551ee1' 
  AND token = 'RRVT0TzODoVzzw67Bk4B5sFMiCd4uhUqSnYm/rWlo84=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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