Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9664a57e273ceedcb4f8b1c1c8b78b7747b8ad1095b845896cc701b010381927' 
  AND token = 'TNcdISC8culYJK9YNhHyomj3jluEXKoiJ8LbfxbBd5M=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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