Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e49e90c69c2b08da20d65db5baa40f5c84a026989888388ba1ce3e3f8a3f713a' 
  AND token = 'gjxTydiQJnT+tkj3dJmRQ3ZVf3um4IbXTb4PkESa9eo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00067

JSON explain

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