Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0a33ddc496488f0ce8add8f4b5948b432fbbb94827ac98e05408638dc1b46771' 
  AND token = 'BHk+Zai0Sstp1qNWWx34cFiVHQa1VBBpKXro81ESAVU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00055

JSON explain

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