SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '1f0f83f6e16007c35d6f66bb24a305871196080bc9305221b27dd870e53d96c6' 
  AND token = 'he+VVKPf2ulWj1HCi+dKq2y5tgP3W7hkFkkIry0hBpw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

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