Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '89e6a710eb837489cd1fff39086e7d79594c611b9666903f7a3041814e8e49bd' 
  AND token = 'dpozrbfmCGOlggjNBBjY5Y1L8+JzgHe9CS1V34UuJ44=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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