Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4ca8cc38dc8a78fe38de249ac371e525d652e6a7beb9955175542557f7fd2e11' 
  AND token = 'rOag8aRfhNku7j+pjUsr8z50YFfN1UUGthhUdbLnfxk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00089

JSON explain

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