Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'ebd8b0d558836761b8e9ebecde60fd5fe3ee277139013b4a2d7f8b02fef1a6dc' 
  AND token = 'tw3E6tFrSkQkTgFO/rrIpVAjXKne4kwTvM38wXLayYE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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