Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'a27048436bc336f4660c276444554f176846ea636270d36e83063b24b2e02244' 
  AND token = 'bdeEk77eUX/U2rZbLHn0gos0R+4/yjbLDWQ8rkSgOgc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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