Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '63e59f2688ce33de0bfaefa24c4d4afecaa2aa6c1cb6317bcedb1a91b02c2dc2' 
  AND token = 'IKsNOph8bzwdfZkWv8/s0awimdixCGMRCmRa7bclaSM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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