SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '089c3f4abcb13520981f297d5701fc9938641ad1b637f43b0a9411923de3d9ed' 
  AND token = 'kWnXWb53F6iYw/UNGh+kpcbBKGBtGhO97owpg0l0zxk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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