Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'fa7ae88e495d01fa80bb24865032762377dad1adba22129161ca7ad8ab920a4f' 
  AND token = 'LAPX+AzkiVjMdUWQHIuLFqdvuerlHDxRGLkmh4cfy8Q=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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