Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8ddefd2c6b4932840b42c59d2f21f38be4fc6d75efb55a2679801406d109049a' 
  AND token = 'ypFftwiU0aRckAil01YykVG07ENVNwYmvCdTnWO6VSc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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