Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '429592371df93c5eb988f5b46234ffdf43931f9ba865a699eb8a28801d47f48d' 
  AND token = 'rvdfL2+eOVVYJsd96O8rzauVVUFdJTb+1LrukO4bzHc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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