Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'f32e30f490a3938ce70071812bd63a746d93990c43a4fec85c23d1c31b699aee' 
  AND token = '+c6ul0vG6xA0L/3ed/KLDnJz6v2E/OABzS9wfprSing=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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