Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7f122930ebba2cdda34fc0c657a2de40306040b11091aa55048d4e8c38b970ab' 
  AND token = 'jJpUHEf8kDg01l+oumMHiVK27uMy8fudOc8VbteV3/c=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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