Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2c9d7af25f0ac933068ebe25787fdfdc1a29cadb6414e400ff01a181f4575529' 
  AND token = 'qhkO6BcaX2s6NDvq8r+t/ekohkPixUqodgAoaT+s+gQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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