Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7ea87ce862452749212c6c0fe2364f5427c08a022594f5ef30611623c451a5ff' 
  AND token = 'ZpGsfi6aaCfD35sk9lhfbSh1Er+x0wgPj5O4jw+q3fU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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