Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '29ea95cf7e811cd16d2887c402b02788b888a3a653120993d8b611ab08c4f560' 
  AND token = 'UoH4ROLxZhR/vMzhtie5Y3ERNXY8fRjzxglzxZOllNM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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