Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3dcd033e51d92bec9114976fc91ca3d161033145a83ea902e616df635b44738d' 
  AND token = 'VpfUHzsXTH2Q0aZpo0LC8HPMQ0l5niEOJML1lurbNrQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00049

JSON explain

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