Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '90461682eeadf563fb4be9dd445d5fd7d6ba4884eaa274c73fde17b0eefe95f2' 
  AND token = 'ilH15IWlP26ftZPA4jVtd//xShXG04snpt659Df5mtc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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