Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9eace7c7f168bd8aae01116cf0e1155fb1a635745da2dc744e43b7c057fa61d1' 
  AND token = 'Ec0FZSpkVrbvmfwLDROx0WVdLyID4pId/SetxYTmIk8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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