Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '26330e943d9b093a92d8e13c6766950210710e91106c9e6d5325999dd9e1ad62' 
  AND token = 'F5pPADjvfe9AZYpoBzdI1bvC7R7oa7P6qmAtfgcniF4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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