Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '09c058fae27cc0011c399d83bb775edc19941c2c7f6fd592ed508c98436e8aac' 
  AND token = 'C66k1erLEHYfes1y5iKCEJqGoKTG5MOLdO4ljDcWx9o=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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