Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '114de2b84cbf6a6d030ef00150dbf38be41b22e2ed072fba103c014d5874a116' 
  AND token = 'HjUPeuipEVgr1Yzs488VNBiMXBUEvxsvM4bamgHCNb8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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