Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '89dbaff5f5b7856492edf45fe955edb0a38c25412c2bd9b90c7933b02a82fac7' 
  AND token = 'Aleyru1u6+lcQ+b37FL58lsYX1PaECK9JCogt29lCRs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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