Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '38de0c1507c11f13278926ce4531d3ac6c22d19ccde4efcb7d60387634d28302' 
  AND token = 'LoBhqDs4nzqPpudeCQZsHfRSotxJykuiayX4FA+CBXE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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