SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '70571906d2da0aa7bbc4f2838f74a7a7979126e119390356f9dfb1085bf0452b' 
  AND token = '19qtv6Z/G/8nv8jjQ39YWHMeaaqyU8mSDs4F2tuSgk0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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