Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ad0bfe276c5d75185d21517dc8b235bdfd0d4b7da520e77f70373ca1e713d7f1' 
  AND token = 'AAYMFNee9wISyBE0PJD111emRMnqEpVymHk/KGow9a0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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