Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c22f5fded7203e8896ae350fbcdce6c91ad706b140108a304f4f007900375f39' 
  AND token = 'kAQgyR6LcBmcwxQCQhAJdq8N/UoTB163vvPmTyr856w=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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