Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3436f222c42ec182bb5fdf6a19eeaacdb07c930b1b5101ec0203d3e2e9bf9f9d' 
  AND token = 'xDohros2HO+54mFXHcaEk/J8/h90IPrg3rimU7PoOBA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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