Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '012dc2a94e5880bab01d68718cb28b9220b142e809e5c0c6a62624b616c476d2' 
  AND token = 'wM98I2Yn7pNke6df4OCOj8YzNHxr165jTSPlF0J86HM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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