Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '065fe40c091e181e29ae2aa69c1104af8101aadca0eededec02714709c7ca943' 
  AND token = 'QK/AbymYx+riMHwu5xoK1TkGm6P3oiJhtV7yMrV/vc4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00042

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}