Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ffa04e3c135a4465ad04c656407c6db09cc2925465922e1d382e3d489055412c' 
  AND token = 'ecHvV66QsiflagbKn7ErCOrbtKLyTytfAPa/ug/mYNo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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