Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4611705eb1baf38b1b6043214b091827874819ddaca80c4ffcc0e9ab435ddbad' 
  AND token = 'amZsb2Iu1v7qnrr1lWa/tZmf6g9tjedQs1EM4Z4+sPo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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