SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '5726b54d8c16f16ca6bd439f8b71b9f085e83fce2d7d7f06b5e8f17ec40b30bd' 
  AND token = 'NHmeI7BZlfxw2Ywih4iM0Q6QVKIjr8a+pH4WIv7EnDo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00062

JSON explain

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