Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1f8382172ccdb2bb0588aa372b6ae54b34edb9904e8e0c0878483df66a81613a' 
  AND token = 'pS0KeFoNMloRbz/YkrAp1H4WPt/Fh76S5SPeX3GZ1F0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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