Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'bfa89efa638044856b30f6a36f3e5f7c05083864618b715a7db220b7078a87eb' 
  AND token = 'XfSeqft2u9wdSUnFIEdL9aC3Os35TUlxY4z58UUDee8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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